public async void ListTableColumnsTest()
{
TableColumnsList tableColumnsList = await hManager.ListTableColumns("testing", "table1");
if (string.IsNullOrEmpty(tableColumnsList.error))
{
Console.WriteLine(string.Format("table {0}.{1} columns:", tableColumnsList.database, tableColumnsList.table));
tableColumnsList.columns.ForEach(c =>
{
Console.WriteLine(string.Format("{0}({1}) => {2}", c.name, c.type, c.comment));
Task <ColumnDescribe> describeTableColumnTask = hManager.DescribeTableColumn(tableColumnsList.database, tableColumnsList.table, c.name);
Task.WaitAll(describeTableColumnTask);
var describeColumn = describeTableColumnTask.GetAwaiter().GetResult();
if (string.IsNullOrEmpty(describeColumn.error))
{
Console.WriteLine(string.Format("{0}({1}) => {2}", describeColumn.column.name, describeColumn.column.type, describeColumn.column.comment));
}
else
{
Console.WriteLine(((Error)describeColumn).ToString());
}
});
}
else
{
Console.WriteLine(((Error)tableColumnsList).ToString());
}
}
public async Task <TableColumnsList> ListTableColumns(string database, string tableName)
{
if (string.IsNullOrEmpty(database) || string.IsNullOrEmpty(tableName))
{
throw new Exception("database and table are required.");
}
TableColumnsList tableColumnsList = await Get <TableColumnsList>(_webHcatBaseUrl, _webHCatVersion, _webHCatUserName, requestURL.ListTableColumns(database, tableName));
return(tableColumnsList);
}
